Submission #1220053
Source Code Expand
#include <bits/stdc++.h> #define xx first #define yy second #define mp make_pair #define pb push_back #define fill( x, y ) memset( x, y, sizeof x ) #define copy( x, y ) memcpy( x, y, sizeof x ) using namespace std; typedef long long LL; typedef pair < int, int > pa; inline int read() { int sc = 0; char ch = getchar(); while( ch < '0' || ch > '9' ) ch = getchar(); while( ch >= '0' && ch <= '9' ) sc = sc * 10 + ch - '0', ch = getchar(); return sc; } const int MAXN = 100010; vector < int > G[MAXN]; int f[MAXN], n; inline void dfs(int x, int fa) { for( auto y : G[ x ] ) if( y ^ fa ) dfs( y, x ); int d = 20; for( ; ~d ; d-- ) { int c = 0; for( auto y : G[ x ] ) if( y ^ fa ) if( f[ y ] >> d & 1 ) c++; if( c >= 2 ) { f[ x ] += 1 << d + 1; break; } else if( c == 1 ) f[ x ] |= 1 << d; } if( d == -1 ) f[ x ]++; } int main() { #ifdef wxh010910 freopen( "data.in", "r", stdin ); #endif scanf( "%d", &n ); for( int i = 1, x, y ; i < n ; i++ ) scanf( "%d%d", &x, &y ), G[ x ].pb( y ), G[ y ].pb( x ); dfs( 1, 0 ); int ret = 0; while( ( 1 << ret + 1 ) <= f[ 1 ] ) ret++; cout << ret << endl; }
Submission Info
Submission Time | |
---|---|
Task | D - Uninity |
User | wxh010910 |
Language | C++14 (GCC 5.4.1) |
Score | 1400 |
Code Size | 1173 Byte |
Status | AC |
Exec Time | 57 ms |
Memory | 9472 KB |
Compile Error
./Main.cpp: In function ‘int main()’: ./Main.cpp:45:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf( "%d", &n ); ^ ./Main.cpp:46:94: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for( int i = 1, x, y ; i < n ; i++ ) scanf( "%d%d", &x, &y ), G[ x ].pb( y ), G[ y ].pb( x ); ^
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 1400 / 1400 | ||||
Status |
|
|
Set Name | Test Cases |
---|---|
Sample | s1.txt, s2.txt |
All | 01.txt, 02.txt, 03.txt, 04.txt, 05.txt, 06.txt, 07.txt, 08.txt, 09.txt, 10.txt, 11.txt, 12.txt, 13.txt, 14.txt, 15.txt, 16.txt, 17.txt, 18.txt, 19.txt, 20.txt, 21.txt, 22.txt, 23.txt, 24.txt, 25.txt, 26.txt, 27.txt, 28.txt, 29.txt, 30.txt, 31.txt, 32.txt, 33.txt, 34.txt, 35.txt, 36.txt, 37.txt, 38.txt, 39.txt, 40.txt, 41.txt, 42.txt, 43.txt, 44.txt, 45.txt, 46.txt, 47.txt, 48.txt, 49.txt, 50.txt, 51.txt, 52.txt, 53.txt, 54.txt, 55.txt, 56.txt, 57.txt, 58.txt, 59.txt, 60.txt, 61.txt, 62.txt, 63.txt, 64.txt, 65.txt, 66.txt, 67.txt, 68.txt, 69.txt, 70.txt, 71.txt, 72.txt, s1.txt, s2.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
01.txt | AC | 50 ms | 6272 KB |
02.txt | AC | 49 ms | 6272 KB |
03.txt | AC | 52 ms | 6272 KB |
04.txt | AC | 50 ms | 6272 KB |
05.txt | AC | 50 ms | 6272 KB |
06.txt | AC | 52 ms | 6272 KB |
07.txt | AC | 50 ms | 6272 KB |
08.txt | AC | 49 ms | 6272 KB |
09.txt | AC | 36 ms | 6784 KB |
10.txt | AC | 36 ms | 7680 KB |
11.txt | AC | 19 ms | 4992 KB |
12.txt | AC | 19 ms | 5248 KB |
13.txt | AC | 56 ms | 9472 KB |
14.txt | AC | 50 ms | 9088 KB |
15.txt | AC | 57 ms | 8704 KB |
16.txt | AC | 55 ms | 7296 KB |
17.txt | AC | 38 ms | 6520 KB |
18.txt | AC | 38 ms | 6516 KB |
19.txt | AC | 41 ms | 6656 KB |
20.txt | AC | 41 ms | 6656 KB |
21.txt | AC | 42 ms | 6528 KB |
22.txt | AC | 42 ms | 6528 KB |
23.txt | AC | 38 ms | 6520 KB |
24.txt | AC | 38 ms | 6520 KB |
25.txt | AC | 43 ms | 6396 KB |
26.txt | AC | 44 ms | 6400 KB |
27.txt | AC | 45 ms | 6400 KB |
28.txt | AC | 46 ms | 6400 KB |
29.txt | AC | 47 ms | 6400 KB |
30.txt | AC | 52 ms | 6400 KB |
31.txt | AC | 52 ms | 6400 KB |
32.txt | AC | 49 ms | 6272 KB |
33.txt | AC | 52 ms | 6272 KB |
34.txt | AC | 50 ms | 6272 KB |
35.txt | AC | 50 ms | 6272 KB |
36.txt | AC | 50 ms | 6272 KB |
37.txt | AC | 50 ms | 6272 KB |
38.txt | AC | 50 ms | 6144 KB |
39.txt | AC | 54 ms | 6144 KB |
40.txt | AC | 51 ms | 6272 KB |
41.txt | AC | 50 ms | 6272 KB |
42.txt | AC | 51 ms | 6144 KB |
43.txt | AC | 51 ms | 6144 KB |
44.txt | AC | 43 ms | 6656 KB |
45.txt | AC | 44 ms | 6656 KB |
46.txt | AC | 45 ms | 6656 KB |
47.txt | AC | 45 ms | 6656 KB |
48.txt | AC | 48 ms | 6528 KB |
49.txt | AC | 48 ms | 6528 KB |
50.txt | AC | 51 ms | 6400 KB |
51.txt | AC | 51 ms | 6400 KB |
52.txt | AC | 51 ms | 6144 KB |
53.txt | AC | 51 ms | 6272 KB |
54.txt | AC | 52 ms | 6272 KB |
55.txt | AC | 51 ms | 6144 KB |
56.txt | AC | 38 ms | 6520 KB |
57.txt | AC | 48 ms | 8700 KB |
58.txt | AC | 48 ms | 8700 KB |
59.txt | AC | 53 ms | 6144 KB |
60.txt | AC | 53 ms | 6144 KB |
61.txt | AC | 42 ms | 7160 KB |
62.txt | AC | 42 ms | 7160 KB |
63.txt | AC | 2 ms | 2560 KB |
64.txt | AC | 2 ms | 2560 KB |
65.txt | AC | 2 ms | 2560 KB |
66.txt | AC | 2 ms | 2560 KB |
67.txt | AC | 2 ms | 2560 KB |
68.txt | AC | 2 ms | 2560 KB |
69.txt | AC | 2 ms | 2560 KB |
70.txt | AC | 2 ms | 2560 KB |
71.txt | AC | 2 ms | 2560 KB |
72.txt | AC | 2 ms | 2560 KB |
s1.txt | AC | 2 ms | 2560 KB |
s2.txt | AC | 2 ms | 2560 KB |